Communication between Rpi zero and RPi 3 with MQTT and a PIR sensor

[lambtho]

I do not really understand where the problem is. Correct me if I am wrong :

• Your PIR sensor (hardware) is working
• You can send manually MQTT data from one the PiZero to the RPi3 using a terminal
• The PIR sensor does not send MQTT value at all and you can not see anything in terminal.

If all these are right, then the code on the PiZero is the problem, and not the HA side.

Check this post, it might help you with the solution

Command Line vs MQTT for binary sensor

Update to make it work slightly better. The timer will now reset if it “resenses” motion before the timer expires. #!/usr/bin/python import RPi.GPIO as GPIO import time import sys import paho.mqtt.publish as publish DELAY = 3 # Setup the mode and pin assignment, physical pin 26 GPIO.setmode(GPIO.BCM) PIR_PIN = 7 GPIO.setup(PIR_PIN, GPIO.IN) def INACTIVE(): print "Motion Inactive" publish.single("mb/eastWall/motion", "inactive", retain=True, hostname="homeserver") def MOTION(…